diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 1b0d40ee..bbfaf62d 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -72,7 +72,7 @@ jobs:
     - name: Generate docs
       run: bundle exec rake docs:all
     - name: Docs test
-      uses: dita-ot/dita-ot-action@4.1.2
+      uses: dita-ot/dita-ot-action@4.3.3
       with:
         build: dita -i documentation/bolt.ditamap -o out -f html5 --processing-mode=strict